Linux Kernel up to 4.5 Netfilter memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.5. This affects an unknown part of the component Netfilter. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2016-4998. The attack is restricted to local execution. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 4.5 (Operating System). This vulnerability affects some unknown functionality of the component Netfilter. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, and availability. CVE summarizes:

The IPT_SO_SET_REPLACE setsockopt implementation in the netfilter subsystem in the Linux kernel before 4.6 allows local users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from kernel heap memory by leveraging in-container root access to provide a crafted offset value that leads to crossing a ruleset blob boundary.

The weakness was disclosed 07/03/2016 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2016-4998 since 05/24/2016. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 91880 (Ubuntu 14.04 LTS : linux vulnerabilities (USN-3018-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196518 (Ubuntu Security Notification for Linux-lts-vivid Vulnerabilities (USN-3020-1)).

Upgrading to version 4.6 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91880) and SecurityFocus (BID 91451†). The entries VDB-87611, VDB-88137, VDB-88138 and VDB-90548 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.1
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91880
Nessus Name: Ubuntu 14.04 LTS : linux vulnerabilities (USN-3018-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 863936
OpenVAS Name: Ubuntu Update for linux USN-3018-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.6
Patch: git.kernel.org

Timelineinfo

05/24/2016 🔍
06/27/2016 +34 days 🔍
06/27/2016 +0 days 🔍
06/28/2016 +1 days 🔍
07/03/2016 +5 days 🔍
07/03/2016 +0 days 🔍
07/04/2016 +1 days 🔍
08/26/2022 +2244 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3018-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4998 (🔍)
GCVE (CVE): GCVE-0-2016-4998
GCVE (VulDB): GCVE-100-88552

OVAL: 🔍

SecurityFocus: 91451 - Linux Kernel Multiple Local Memory Corruption Vulnerabilities
SecurityTracker: 1036171

See also: 🔍

Entryinfo

Created: 07/04/2016 10:07
Updated: 08/26/2022 10:59
Changes: 07/04/2016 10:07 (65), 02/15/2019 15:53 (15), 08/26/2022 10:49 (6), 08/26/2022 10:54 (1), 08/26/2022 10:59 (1)
Complete: 🔍
Cache ID: 216:CCC:103

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